Lathe chuck aligning and mounting bar

ABSTRACT

A DEVICE INTENDED TO FACILITATE MOUNTING OF A LATHE CHUCK OR FACE PLATE. THE DEVICE IS AN ELONGATED MEMBER HAVING FIVE SECTIONS WHICH ARE INTEGRAL AND DISPOSED END TO END ALONG A COMMON AXIS. THE FIRST SECTION IS A CYLINDER EXTENDING FROM ONE END OF THE MEMBER TO ONE END OF THE SECOND SECTION. THE SECOND SECTION IS A TRUNCATED CONE WITH ITS SMALL END CONSTITUTING THE ONE END OF THE SECOND SECTION AND ITS LARGER END CONSTITUTING THE OPPOSITE END OF THE SECOND SECTION. THE THIRD SECTION IS A SECOND CYLINDER OF LARGER DIAMETER THAN THE LARGER END OF THE SECOND SECTION AND FORMS WITH THIS LARGER END A RIGHT ANGLE SHOULDER. THE FOURTH SECTION IS ANOTHER TRUNCATED CONE WITH ITS LARGER END HAVING THE SAME DIAMETER AS THE THIRD SECTION CYLINDER AND INTEGRAL THEREWITH. THE FIFTH SECTION IS A ROUNDED HEAD WHICH DEFINES THE OPPOSITE END OF THE MEMBER AND IS INTEGRAL WITH THE SMALLER END OF THE FOURTH SECTION CONE.

Jan. 12 1971 LATHE CHUCK ALIGNING AND MOUNTING BAR Filed Jan. 14, 1969 INVE R. GEORGE 40210 United States Patent US. Cl. 29200 4 Claims ABSTRACT OF THE DISCLOSURE A device intended to facilitate mounting of a lathe chuck or face plate. The device is an elongated member having five sections which are integral and disposed end to end along a common axis. The first section is a cylinder extending from one end of the member to one end of the second section. The second section is a truncated cone with its small end constituting the one end of the second section and its larger end constituting the opposite end of the second section. The third section is a second cylinder of larger diameter than the larger end of the second section and forms with this larger end a right angle shoulder. The fourth section is another truncated cone with its larger end having the same diameter as the third section cylinder and integral therewith. The fifth section is a rounded head which defines the opposite end of the member and is integral with the smaller end of the fourth section cone.

SUMMARY OF THE INVENTION My device for facilitating mounting of a lathe chuck or face plate comprises an elongated solid or hollow member having five integral sections disposed end to end along a common axis and defining, in the order named, a first cylinder having a first diameter, a first truncated cone with its smaller end adjacent the first cylinder and having said first diameter, a second cylinder having a second diameter larger than the larger end of the first cone and forming a right angle shoulder therewith, a second truncated cone with its larger end adjacent the second cylinder and having said second diameter, and a rounded head tapering inward from the smaller end of the second cone.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings: FIG. 1 is a perspective view of my invention in use: FIG. 2 is a side view of my invention; FIGS. 3 and 4 are opposite end views of my invention; FIG. 5 is a cross section taken along line 55 in FIG. 2; and

FIG. 6 is a detail side view of my invention in use.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT Referring first to FIGS. 1-6, there is shown an integral or one piece solid or hollow metal member having five sections disposed end to end along a common horizontal axis and identified respectively at 10, 12, 14, 16 and 18. Section 10 is a circular cylinder having a first diameter. Section 14 is a circular cylinder having a second and larger diameter. Section 12 is a truncated cone having its smaller end adjacent section 10, this smaller end having the same diameter as section 10, and its larger end adjacent section 14, this larger end having a smaller diameter 3,553,810 Patented Jan. 12, 1971 ice than section 14 and forming, as shown at 20, a ninety degree or perpendicular shoulder therewith.

Section 18 is a rounded head tapering inward from the smaller end of another truncated. cone which constitutes section 16. The larger end of section 16 is adjacent section 14 and has the same diameter as; section 14.

This invention relates to a device intended to facilitate the mounting of a lathe chuck or faceplate. It has particular application on larger lathes employing heavy chucks where considerable manual effort is required to change chucks, although it can be used on lathes of any size. It may be made of any suitable material that will give it the required strength and toughness, solid or hollow. At the option of the manufacturer, when the jaws of the off coming chuck are sufiiciently opened, the mounting bar can be inserted into the [hollow of the headstock spindle 30 and after the headstock has been locked the off coming chuck 32 can be backed off without fear of suddenly dropping the chuck after it has left the last thread of the headstock spindle. The on going chuck or faceplate can after the removed chuck or faceplate has been placed in the clear be started up on the taper 16 of the mounting bar. Then onto the parallel section 14 where it should be a neat sliding fit up to the threaded section of the headstock spindle bring it into line for screwing onto the spindle. After chucks or faceplates have been changed the device can be removed with a knock out bar through the hollow of the headstock spindle.

It is to be noted of course that this device is to be round and of such diameters as to accommodate the lathes on which it is to be used. I

While I have described my invention with particular reference to the drawings, such is not to be considered as limiting its actual scope.

Having thus described this invention, what is asserted as new is:

1. A lathe chuck aligning and moving bar comprising:

an integral elongated member having five sections disposed end to end along a common axis;

said first section being a first cylinder;

said second section being a first truncated cone;

said third section being a second cylinder;

said fourth section being a second truncated cone; and

said fifth section being a rounded head.

2. A bar as set forth in claim 1 wherein the diameter of the second cylinder is larger than the larger end of the first cone; said larger end is disposed adjacent the second cylinder and forms a right angle shoulder therewith; and the smaller end of the cone is of like diameter to the first cylinder and is disposed adjacent same.

3. A bar as set forth in claim 2 wherein the larger end of the second cone is of like diameter to said second cylinder and is disposed adjacent same.

4. A bar as set forth in claim 3 which can be either solid or hollow.

References Cited UNITED STATES PATENTS THOMAS H. EAGER, Primary Examiner 

